diff --git a/mmv1/products/firebase/AndroidApp.yaml b/mmv1/products/firebase/AndroidApp.yaml
index 8cd21b2db2ba..3e58993f5e98 100644
--- a/mmv1/products/firebase/AndroidApp.yaml
+++ b/mmv1/products/firebase/AndroidApp.yaml
@@ -52,6 +52,7 @@ import_format:
     '{{app_id}}',
   ]
 autogen_async: true
+# Sweeper skipped as this resource has customized deletion.
 skip_sweeper: true
 identity:
   - appId
diff --git a/mmv1/products/firebase/AppleApp.yaml b/mmv1/products/firebase/AppleApp.yaml
index 7c9ab93c8258..f40d18733008 100644
--- a/mmv1/products/firebase/AppleApp.yaml
+++ b/mmv1/products/firebase/AppleApp.yaml
@@ -52,6 +52,7 @@ import_format:
     '{{app_id}}'
   ]
 autogen_async: true
+# Sweeper skipped as this resource has customized deletion.
 skip_sweeper: true
 identity:
   - appId
diff --git a/mmv1/products/firebase/WebApp.yaml b/mmv1/products/firebase/WebApp.yaml
index e6682fdb76df..1ccebb6f418d 100644
--- a/mmv1/products/firebase/WebApp.yaml
+++ b/mmv1/products/firebase/WebApp.yaml
@@ -52,6 +52,7 @@ import_format:
     '{{app_id}}',
   ]
 autogen_async: true
+# Sweeper skipped as this resource has customized deletion.
 skip_sweeper: true
 identity:
   - appId